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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 5.8.4.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix bug in tracing with matchspec body containing
+ <c>enable_trace</c> or <c>disable_trace</c>. Could cause
+ emulator crash if trace was altered with
+ erlang:trace_pattern by racing process during ongoing
+ tracing.</p>
+ <p>
+ Own Id: OTP-9422 Aux Id: seq11868 </p>
+ </item>
+ <item>
+ <p>
+ Fix emulator deadlock in <c>ets:delete</c> on tables with
+ <c>write_concurrency</c> caused by race with concurrent
+ process that tries to do other operation on the same
+ table. Does not apply to <c>ordered_set</c>. Bug exist
+ since R14B.</p>
+ <p>
+ Own Id: OTP-9423 Aux Id: seq11872 </p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ The <c>erts_alloc_util</c> framework has been extended
+ with functionality for separation of small blocks from
+ other blocks in separate carriers. This functionality is
+ currently disabled by default, but can be enabled in
+ order to finetune memory management. For more information
+ see <seealso
+ marker="erts:erts_alloc">erts_alloc(3)</seealso>.</p>
+ <p>
+ Own Id: OTP-9339 Aux Id: Seq11780 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 5.8.4</title>
<section><title>Fixed Bugs and Malfunctions</title>